An adjustable shade greenhouse device selectively controls light exposure within a greenhouse. The device includes a frame having spaced cross members arching between lateral sides of the frame. Outermost cross members are positioned at respective ends of the frame. Spacers are each coupled to outermost cross members and spaced longitudinal supports are coupled to and extend between associated pairs of the spacers such that each longitudinal support extends along the frame in inwardly spaced relationship to the cross members. An interior cover is supported by the longitudinal supports. A shade has a lower edge coupled to one of the lateral sides of the frame. A transport bar coupled to the frame is selectively movable along the cross members with a top end of the shade wherein the shade is selectively extendable and retractable over the frame by movement of the transport bar.
